Speed test matrix
Hy-MT2-7B-FP8 on RTX 3090 24GB
vllm · 0.32.0 · FP86 contexts (0–248K) × 8 concurrency levels (1–128) · prefill at 8K, 16K, 32K, 64K, 128K
Hardware
- Type
- Discrete GPU
- GPU
- RTX 3090
- VRAM
- 24 GB
- CPU
- Intel Core i7-9700K (8C)
- RAM
- 32 GB
- OS
- Ubuntu 24.04.5
Engine
- Engine
- vllm
- Version
- 0.32.0
- Quantization
- FP8
- Backend
- cuda
- Repository
- github.com/vllm-project/vllm
- Build
- vllm/vllm-openai:v0.32.0-x86_64
Run
- Served model
- bench
- Revision
- main
- Benchmark tool
- llm-inference-bench v0.8.0
- Decode test
- Fixed duration
- Prefill mode
- Measured during decode warm-up
- Time per measurement
- 30 s
- Max output
- 8,192 tokens
Launch command
# Untuned out-of-the-box baseline. Spec decode: none. KV cache: int4_per_token_head # 1x RTX 3090 24GB (Zagitta/gpu-unlock), 420 W limit, PCIe Gen3 x16 | Intel Core i7-9700K 8C | 32 GB DDR4 | Ubuntu 24.04.5, NVIDIA driver 580.178.04 vllm serve tencent/Hy-MT2-7B-FP8 --max-model-len 262144 --gpu-memory-utilization 0.94 --max-num-seqs 128 --enable-prefix-caching --trust-remote-code --enforce-eager --kv-cache-dtype int4_per_token_head --attention-backend TRITON_ATTN
Prefill
prompt tok/s by context length8K context3,9972,062 ms TTFT
16K context2,8915,650 ms TTFT
32K context1,84917,594 ms TTFT
64K context1,06361,073 ms TTFT
128K context568.0228,366 ms TTFT
Sustained decode
total tok/s · rows are context length, columns are simultaneous requests| Context | 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128 |
|---|---|---|---|---|---|---|---|---|
| 0 | 19.84,050 ms TTFT | 38.74,094 ms TTFT | 77.6163 ms TTFT | 155.1169 ms TTFT | 305.4197 ms TTFT | 632.9202 ms TTFT | Over capacity | Over capacity |
| 16K | 19.8140 ms TTFT | 39.2178 ms TTFT | 78.1222 ms TTFT | 155.1298 ms TTFT | 295.4421 ms TTFT | Over capacity | Over capacity | Over capacity |
| 32K | 19.8209 ms TTFT | 38.9259 ms TTFT | 78.2357 ms TTFT | 141.0468 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity |
| 64K | 19.8372 ms TTFT | 38.5472 ms TTFT | 65.7649 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
| 128K | 19.2Requests queued658 ms TTFT | 31.3Requests queued846 ms TTFT | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
| 248K | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity | Over capacity |
Requests queued: the server could not run all requests at once, so some waited in a queue. Over capacity: not run because this many requests at this context would exceed the server's KV cache.
TTFT is measured after the benchmark warms the server's prompt cache, so it mostly excludes prefill.
All measurements
Latencies are medians. Total tok/s is output across all simultaneous requests.| Phase | Context | Requests at once | Status | Total tok/s | Per request tok/s | TTFT | Time between tokens | Average active requests | Completed requests | Output tokens | Measured for |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Prefill | 8K | 1 | Valid | 3,997.0 | — | 2,062 ms | — | — | 1 | — | — |
| Prefill | 16K | 1 | Valid | 2,891.0 | — | 5,650 ms | — | — | 1 | — | — |
| Prefill | 32K | 1 | Valid | 1,849.0 | — | 17,594 ms | — | — | 1 | — | — |
| Prefill | 64K | 1 | Valid | 1,063.0 | — | 61,073 ms | — | — | 1 | — | — |
| Prefill | 128K | 1 | Valid | 568.0 | — | 228,366 ms | — | — | 1 | — | — |
| Sustained decode | 0 | 1 | Valid | 19.8 | 19.8 | 4,050 ms | 50.5 ms | 1.0 | 0 | 594 | 30.0 s |
| Sustained decode | 0 | 2 | Valid | 38.7 | 19.3 | 4,094 ms | 51.7 ms | 2.0 | 0 | 1,160 | 30.0 s |
| Sustained decode | 0 | 4 | Valid | 77.6 | 19.4 | 163 ms | 51.7 ms | 4.0 | 0 | 2,324 | 30.0 s |
| Sustained decode | 0 | 8 | Valid | 155.1 | 19.4 | 169 ms | 51.6 ms | 8.0 | 0 | 4,648 | 30.0 s |
| Sustained decode | 0 | 16 | Valid | 305.4 | 19.1 | 197 ms | 52.5 ms | 16.0 | 0 | 9,152 | 30.0 s |
| Sustained decode | 0 | 32 | Valid | 632.9 | 19.8 | 202 ms | 50.6 ms | 32.0 | 0 | 18,976 | 30.0 s |
| Sustained decode | 0 | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 0 | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 1 | Valid | 19.8 | 19.8 | 140 ms | 50.6 ms | 1.0 | 0 | 593 | 30.0 s |
| Sustained decode | 16K | 2 | Valid | 39.2 | 19.6 | 178 ms | 51.0 ms | 2.0 | 0 | 1,174 | 30.0 s |
| Sustained decode | 16K | 4 | Valid | 78.1 | 19.5 | 222 ms | 51.2 ms | 4.0 | 0 | 2,344 | 30.0 s |
| Sustained decode | 16K | 8 | Valid | 155.1 | 19.4 | 298 ms | 51.6 ms | 8.0 | 0 | 4,648 | 30.0 s |
| Sustained decode | 16K | 16 | Valid | 295.4 | 18.5 | 421 ms | 54.1 ms | 16.0 | 0 | 8,848 | 30.0 s |
| Sustained decode | 16K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 16K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 32K | 1 | Valid | 19.8 | 19.8 | 209 ms | 50.5 ms | 1.0 | 0 | 593 | 30.0 s |
| Sustained decode | 32K | 2 | Valid | 38.9 | 19.5 | 259 ms | 51.4 ms | 2.0 | 0 | 1,166 | 30.0 s |
| Sustained decode | 32K | 4 | Valid | 78.2 | 19.5 | 357 ms | 51.2 ms | 4.0 | 0 | 2,344 | 30.0 s |
| Sustained decode | 32K | 8 | Valid | 141.0 | 17.6 | 468 ms | 56.8 ms | 8.0 | 0 | 4,224 | 30.0 s |
| Sustained decode | 32K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 32K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 32K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 32K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 1 | Valid | 19.8 | 19.8 | 372 ms | 50.6 ms | 1.0 | 0 | 592 | 30.0 s |
| Sustained decode | 64K | 2 | Valid | 38.5 | 19.2 | 472 ms | 52.0 ms | 2.0 | 0 | 1,154 | 30.0 s |
| Sustained decode | 64K | 4 | Valid | 65.7 | 16.4 | 649 ms | 60.9 ms | 4.0 | 0 | 1,972 | 30.0 s |
| Sustained decode | 64K | 8 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 64K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 1 | Requests queued | 19.2 | 19.3 | 658 ms | 51.9 ms | 1.0 | 0 | 576 | 30.0 s |
| Sustained decode | 128K | 2 | Requests queued | 31.3 | 15.8 | 846 ms | 63.3 ms | 1.9 | 0 | 938 | 30.0 s |
| Sustained decode | 128K | 4 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 8 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 128K | 128 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 248K | 1 | Over capacity | — | — | — | — | 0.6 | 0 | 0 | 30.0 s |
| Sustained decode | 248K | 2 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 248K | 4 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 248K | 8 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 248K | 16 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 248K | 32 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 248K | 64 | Over capacity | — | — | — | — | — | — | — | — |
| Sustained decode | 248K | 128 | Over capacity | — | — | — | — | — | — | — | — |
Requests queued: the server could not run all requests at once, so some waited in a queue. Over capacity: not run because this many requests at this context would exceed the server's KV cache.